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Old 03-23-2020, 08:12 PM   #1
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2011 23' International
Mercer Island , WA
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Question Snapped freshwater tank valve stem repair

Hello.

A valve stem on my 23' International was cracked and leaking. I snapped both off to see if there was a way to screw something new in its place. The problem is that this is only my second repair and I have no clue what options are available.

Any help?



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Old 03-23-2020, 08:36 PM   #2
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Spin weld a new bung in place.
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Old 03-23-2020, 09:19 PM   #3
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I'm confused. You said valve stem - I don't see a valve. What line is that? You said you snapped both off. What other thing did you snap off?

Is that the top of the tank? Is that the fresh water input? Is one of the two the suction line to the pump? If it is then there is a tube down from the fitting down near the bottom of the tank.

Al
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Old 03-24-2020, 09:36 AM   #4
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2011 23' International
Mercer Island , WA
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Freshwater tank plumbing issues

Quote:
Originally Posted by Al and Missy View Post
I'm confused. You said valve stem - I don't see a valve. What line is that? You said you snapped both off. What other thing did you snap off?

Is that the top of the tank? Is that the fresh water input? Is one of the two the suction line to the pump? If it is then there is a tube down from the fitting down near the bottom of the tank.

Al
Sorry for any missing information. I am still learning the vocabulary.
Will share some more pics to help visually explain what I am dealing with and would love any ideas for fixing this the best way possible. Even I with practically zero experience can tell they clearly designed this wrong and when I repair it I would like to swap the placements of the drain valve and supply line from the tank to the trailer. See new pics. The writing is messy, I was using a mouse to draw, sorry.
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Old 03-24-2020, 09:59 AM   #5
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2011 23' International
Mercer Island , WA
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Quote:
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Spin weld a new bung in place.
Thanks. I did some research on spin welding. Posting link for anyone that may be interested.


Any ideas what specific parts I am actually shopping for?
Clearly I need a router.
Not sure after that. Are there specific cutting attachments for plastic vs metal?
How do I know what sizes I need?
What plastic parts am I welding into the tank?

I am home-bound with post cancer treatment compromised immune system during this pandemic and will be ordering parts and tools. Any specifics will help dramatically.

Thank you guys for the help.
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Old 03-29-2020, 07:10 AM   #6
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Quote:
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Thanks. I did some research on spin welding. Posting link for anyone that may be interested.
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Old 03-29-2020, 09:44 AM   #7
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I think I understand what you are up against now, and will try to answer your questions as best I can. I can't help with identification of parts, maybe someone who has done this can.

1. Does this have to be zig/zag? No
2. Can I swap and make straight? Probably. From the picture it looks like they are both on the same level. One is the low point drain, the other is the feed to the pump. If one is lower than the other, it probably won't make much difference, but the higher one won't have access to all the water in the tank. I'd prefer the drain have the lowest one, but probably not critical.

As an aside, my low point drain started leaking. The valve was offset about 1/2" and was connected to the drain with clear plastic tubing. It was original and finally got hard and cracked. Luckily neither the tank or the drain valve was damaged.

Regarding the foam, get some larger pieces and put them on all sides of the tank in the pan so it can't move.

Al
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